Canvas, duck, or like woven fabric.



No. 645,808. Patented Mar. 20,1900.

W. G. HALKETT. CANVAS, DUCK, 0R LIKE WOVEN FABRIC.

(Application filed. Nov. 15, 1898.)

( N 0 M n dei.)

NiTnD STATES FFICE...

PATENT CANVAS, DUcK, oR LIKE WOVEN FABRIC.

SPECIFICATION forming part of Letters Patent No. 645,808, dated March20, 1900.

,Application filed Nvemhei 15, 1898.

To aZZ whom it may concern:

Beit known that I, WILLIAM G. HALKETT, a citizen of the United States,residing in the city and county of Philadelphia, in the State ofPennsylvania, have invented certain new and useful Improvements iuCanvas, Duck, or Like Woven Fabrics, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, of which-- Figure l is a plan view of a piece of canvas orduck, showing my invention as applied thereto, the Warp-threads only ofthe fabric being shown. Fig. 2 is a transverse section of two pieces ofduck whose superposed margins are sewed together on the line of thewaxed Warp-threads. Fig. 3 is a section, enlarged, as on line 3 3, Fig.1.

It has heretofore been customary in sewing together the overlappedmargins of pieces of canvas, duck, or the like comparativelyhard andclosely-woven fabric for the workman to rub beeswax or other wax on thesurface of the latter along the line upon which the sewing is to bedone, so that the sewingneedle may the more readily be forced throughthe material. In such case although the use of the Wax Was advantageousit could not, obviously, be as satisfactory as if the wax penetrated theinterior of the fabric.

The object of my improvement is to provide a fabric of the kind referredto in which certain of the threads are previously to being Woven coatedor saturated with wax or other like lubricant, said lthreads being onthe line upon which the margins of pieces of the fabric are intended tobe united by sewing, the threads of the other portions of the fabricbeing devoid of wax, whereby certain advantages are secured, ashereinafter mentioned.

In carrying out my invention, reference being had to the accompanyingdrawings, I cover or saturate with wax or the like a series ofwarp-threads, which when the fabric 2 has been woven will be on therequired or usual lines upon which two pieces of the fabric are to besewed together. Although the wax may be applied to such threads invarious ways, I prefer to pass the same through a vessel con- Seral No.696,501, (No specimens.)

taining melted wax. These threads thus treated are subsequently arrangedcontiguously in suitable position with relation to the otherwarp-threads in the loom and are interwoven with the weft-threads 5simultaneously with the other warp-threads- :A portion of the wax uponthe surface of the threads will usually adhere to the contiguousweft-threads 5, Fig. 3, when the weaving takes place. It being customaryto unite superposed pieces of duck along two lines of stitching 6, Iwould ordinarily thus Wax several of the warpthreads 3 along andadjacent to the margin of the fabric and also a like number of thethreads 4 a suitable distance from the first, as shown, and as the waxedthreads will be of a different shade or luster from that of the otherwarp-threads the said two lines of waxed thread may be easily discerned,and thus the two pieces of fabric may be readily properly superposed tobring the lines of waxed thread into proper position -for sewingtogether through the two pieces, as seen in Fig. 2.

I have used in practicing my invention paraffin-Wax 5 but the threadsmay be treated with beeswax, stearin, or other similar lubricatingmaterial or compound not injurious to the fabric.

The advantages of my improvement are that the fabric is ready for sewingtogether Without requiring the workman to lubricate the same in theusual way, the passage of the needle through the interstices of thematerial is much facilitated, and the point of the needle is not soliable to catch in the threads in being thrust through the fabric, butrather to slide over or around the threads.

Having thus described my invention, I

claim as new and desire to secure by Letters Patentl. As an improvedarticle of manufacture, canvas, duck, or the like fabric, `havingaseriesof Warp-threads lubricated with wax or the like and woven in said fabricon predetermined lines only, the threads of the other portions of thefabric being devoid of the lubricant. y

2. As an improved article of manufacture, canvas, duck, or the likefabric, having a series of warp-threads lubricated with wax or IOO thelike and arranged along the margin of In testimony whereof I havehereunto af the fabric, and a second series of similariyxed my signatureths'Sth day of November,

lubricated warp-threads a predetermined dis- A. D. 1898. tance from theformer series, the threads of WILLIAM Gr. HALKETT. 5 each series beingWoven in said fabric, and Witnesses:

the threads of the other portions of the fabric WALTER C. PUSEY,

JOSHUA PUSEY.

being devoid of the lubricant.

